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3 years ago

Evaluate -x+4x when x=-2

Mathematics

2 answers:

snow_lady [41]3 years ago

8 0

Use the substitution method

-x+4x when x=-2

-(-2)+4(-2) Positive number * ( multiplying)Negative number=Negative number

2-8

=-6

Answer is -6

xenn [34]3 years ago

3 0

The answer is -6. The explanation is shown in the picture.

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3 years ago

Andy is buying a new laptop computer. The store is offering a 15% discount on the model he wants. Andy also has a certificate fr

nika2105 [10]

Answer:

$899.15

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What is 54x > 87? I need to know fast

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3 years ago

PLEASE HELP!!!!!

zhuklara [117]

Answer: The probability of picking 7 and then picking a number greater than 7 is $\frac{1}{3}$ or 0.3

Step-by-step explanation: Probability

Probability shows us the chances of an event occurring.

Now, given that we have already picked three cards. therefore, 7, 8, and 9.

The number of possible outcomes is 3.

the probability of card 7,

Now, as card seven is already picked up cards 8 and 9 are the only card left.

therefore, the sample size(possible outcomes) was reduced to 2 only.

Also, cards 8 and 9 both are greater than 7, thus the desired outcome is also 2.

Further the probability of the number greater than 7 occurring,

Probability picking a number greater than 7

The probability of picking a 7 and then picking a number greater than 7

= Probability of card 7 occurring x probability of card 8 and 9 occurring.

You're welcome. Pls give me brainiest

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2 years ago